Fig. 1From: A sinogram denoising algorithm for low-dose computed tomographyTwo typical one-dimensional profiles of the noisy and denoised projections simulated from the Shepp-Logan phantom. The thin blue curve in each plot shows the corresponding noise-free projection. The left column is for the high-noise case and the right column is for the low-noise case. a the noisy sinogram, b denoised using bilateral filtering, c denoised with NL-PCA, and d denoised with the proposed TV-based algorithmBack to article page